JPS57165777A - Obstacle detection device for ultrasonic wave - Google Patents

Obstacle detection device for ultrasonic wave

Info

Publication number
JPS57165777A
JPS57165777A JP5147481A JP5147481A JPS57165777A JP S57165777 A JPS57165777 A JP S57165777A JP 5147481 A JP5147481 A JP 5147481A JP 5147481 A JP5147481 A JP 5147481A JP S57165777 A JPS57165777 A JP S57165777A
Authority
JP
Japan
Prior art keywords
distance
ultrasonic wave
wave
detected
latch circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP5147481A
Other languages
Japanese (ja)
Other versions
JPS6343718B2 (en
Inventor
Hideo Shibuya
Fumio Kosuge
Tomoaki Abe
Makoto Otsuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP5147481A priority Critical patent/JPS57165777A/en
Publication of JPS57165777A publication Critical patent/JPS57165777A/en
Publication of JPS6343718B2 publication Critical patent/JPS6343718B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/06—Systems determining the position data of a target
    • G01S15/08—Systems for measuring distance only
    • G01S15/10—Systems for measuring distance only using transmission of interrupted, pulse-modulated waves
    • G01S15/12—Systems for measuring distance only using transmission of interrupted, pulse-modulated waves wherein the pulse-recurrence frequency is varied to provide a desired time relationship between the transmission of a pulse and the receipt of the echo of a preceding pulse

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

PURPOSE:To make it possible to detect stably obstacles that range from a near distance to a far distance by controlling issuing time of an ultrasonic wave and band range in a receiving system based on the distance data. CONSTITUTION:Ultrasonic wave sent from a wave transmitter 3 is reflected by an obstacle and detected by a wave receiver 4. This information is stored by R- SFF12 until the time of next wave transmission and at the same time sets the changeover circuit 13 in the state of passing. Further, the distance data that was detected is held in a latch circuit 10 for display, and then successively latched in a latch circuit 14 for control. Based on the distance information latched in the latch circuit 14, a timing generator 1 is controlled if the distance is found to be short to shorten the time to transmit ultrasonic wave and widen at the same time the BPF6. In this way obstacles from a near distance to a far distance can be detected stably.
JP5147481A 1981-04-06 1981-04-06 Obstacle detection device for ultrasonic wave Granted JPS57165777A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5147481A JPS57165777A (en) 1981-04-06 1981-04-06 Obstacle detection device for ultrasonic wave

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5147481A JPS57165777A (en) 1981-04-06 1981-04-06 Obstacle detection device for ultrasonic wave

Publications (2)

Publication Number Publication Date
JPS57165777A true JPS57165777A (en) 1982-10-12
JPS6343718B2 JPS6343718B2 (en) 1988-09-01

Family

ID=12887943

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5147481A Granted JPS57165777A (en) 1981-04-06 1981-04-06 Obstacle detection device for ultrasonic wave

Country Status (1)

Country Link
JP (1) JPS57165777A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS643582A (en) * 1987-06-26 1989-01-09 Kurita Water Ind Ltd Ultrasonic range finder

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5041912U (en) * 1973-08-09 1975-04-28

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5041912U (en) * 1973-08-09 1975-04-28

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS643582A (en) * 1987-06-26 1989-01-09 Kurita Water Ind Ltd Ultrasonic range finder

Also Published As

Publication number Publication date
JPS6343718B2 (en) 1988-09-01

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